.header{
    height: 80px;
    text-align: center;
}
.header .logo{
    float: left;   
    text-align: center;
    margin: 17px;
}
.header .logo .ver{
    font-size: 37px;
    line-height: 37px;
	font-weight: bold;
	font-stretch: normal;
	letter-spacing: 0px;
	color: #1b1b1b
}
.header .logo .time{	
    font-size: 11px;
    line-height: 11px;	
	color: #1c1c1c;
}
.header .nav{
    /* 被里面内容撑开但此时还是撑不开父元素的高度与宽度 */
    float: right;
    text-align: center;
}
.nav .item{
    /* 宽度没设置由自己撑开 */
    float: left;
    height: 80px;
    line-height: 80px;   
    margin: 0 40px;
}
.nav .item .line{
    display: block;
    width: 100%;
    height: 2px;
    margin: 0 auto;
    margin-top: -23px;
    background-color: orange;
    opacity: 0;
}
.nav .item:hover .line{
    opacity: 1;
}
.nav .item:hover a{
    color: orange;
}
.header .item.active .line {
    opacity: 1;
}
/* 保证不hover依然显示样式 */
.header .item.active a {
    color: orange;
}
.footer{
    margin-top: 35px;
    overflow: hidden;  
    background-color: #fff;   
}
.footer .web{
    float: left;      
    line-height: 12px;
    height: 12px;    
    font-size: 12px;      
    color: #323232;  
}
.footer .list{
    float: right;
}
.footer .list .item{
    float: left;
    margin-right: 109px;
}
.footer .permit{
    margin-top: 14px;
}
*{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
    color: #666666;;
}
ul{
    list-style: none;
}
body{
    font-family: 'PingFang SC','微软雅黑','sans-serif';
}